专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

101. 发明专利

JPS56115826A CONTROLLING SYSTEM FOR ELECTRIC POWER GENERATER UTILIZING RESERVED HIGHHPRESSURE AIR 失效
公开(公告)号：JPS56115826A
公开(公告)日：1981-09-11
申请号：JP1910980
申请日：1980-02-20
申请人： TOKYO ELECTRIC POWER CO , KAJIMA CORP , HITACHI LTD
发明人： SATOU HIROSHI , NISHI GENICHIROU , MITSUDA NORIMOTO , FUJIMURA TADASHI , URAGAMI TAKESHI , MORI TADAO , ISHINO HISAO , KUMAMOTO KENJIROU , UCHIYAMA YOSHIHIRO , MURAYAMA TAKAO , MIURA HARUO
IPC分类号： F02C6/16 , F02C9/00 , F02C9/16 , H02J15/00
摘要： PURPOSE:To enable to effect the supplying and discharging control of high-pressure air in a high accuracy by a method wherein the supplying and discharging control of the high-pressure air is effected by the level of water in an air tank which is treated as a direct controlling amount. CONSTITUTION:When the filling of the air is advanced, the level of water in the air tank 9, which is supplied by a water pressurizing means 8, is pushed down, therefore, the stopping of the air filling operation is effected under a sequence wherein a level signal from a level detector 30 and a set value in a level setter 34, setting the lower limit of the level, are compared in a controller 60 and a control valve 6 is closed gradually when the level signal has approached the set value of the lower limit. When the air releasing is advanced due to the power generating, the water level in the air tank 9, which is supplied from the water pressurizing means 8, is risen, therefore, the stopping of generating operation is effected under the sequence wherein the water level signal from the level detector 30 and the set value in the level setter 33, setting the upper limit of the water level, are compared in the controller 60 and the control valve 7 is closed gradually when the level signal has approached the value of the upper limit.

102. 发明专利

JPS5672291A SYSTEM FOR CONTROLLING OPERATION OF FAN HANDLING GRANULAR DUST 失效
公开(公告)号：JPS5672291A
公开(公告)日：1981-06-16
申请号：JP14768279
申请日：1979-11-16
申请人： HITACHI LTD
发明人： MIURA HARUO
IPC分类号： F04D7/04 , F04B49/00 , F04B49/10 , F04D27/00
摘要： PURPOSE:To reduce the amount of abrasion of an impeller of a fan by a method wherein a density as well as an intensity of collision of granular dusts are sensed to carry out an operation under reducing a number of revolution of the impeller when the impeller is exposed to a condition wherein abrasion thereof is heavy. CONSTITUTION:A sensor 2, provided on a delivery casing of a fan 1, detects an energy wave due to coolision of granular dusts. Subsequently, a density and an intensity of the coolision of the granular dusts are obtained in an operating device 4 by above-described energy wave. The density of the granular dusts is determined by a number of peaks during an optional time period (t) amoung few minutes of an operation time of the fan due to the collision phenomena of the granular dusts thus detected. The density and the intensity of the collision of the granular dusts computed by the above-described manner are memorized into a memory 5 at every few minutes, a decision whether a number of revolution of the fan 1 should be changed or not is decided by a decision circuit 6 and a signal to reduce the number of revolutions of the fan 1 is inputted into a controller 7 when it is judged that abrasion of the fan 1 would become heavy.

103. 发明专利

JPS54133613A DIFFUSER FOR CENTRIFUGAL FLUID MACHINE 失效
公开(公告)号：JPS54133613A
公开(公告)日：1979-10-17
申请号：JP4032178
申请日：1978-04-07
申请人： HITACHI LTD
发明人： YOSHINAGA YOUICHI , KOSEKI FUMIO , MIURA HARUO
IPC分类号： F04D29/44 , F04D29/68
摘要： PURPOSE:To make possible control over phenomena such as separation and stall by making uniform the velocity distribution at the difuser's inlet by such a construction that high-pressure fluid at the diffuser's outlet is to be jetted out through an adjustable slit provided at the diffuser's inlet. CONSTITUTION:The fluid whose pressure energy is raised up by the diffuser, flows out from the discharge opening upon being gathered at a scroll 5. At the rear of the diffuser's base plate 7, a baffle plate 7' is equipped with a necessary spacing, which forms a back flow line 8. On the inside surface of the diffuser's base plate 7, a ring-shaped nozzle 10 is equipped while a slit 15 is provided at its outlet. A backward guide vane 16 is provided in the back stream line 8 to give, at the diffuser's inlet, the jet stream a swirl in the same direction at the guide vane 4, accelerate low-speed fluid and make uniform the velocity distribution at the diffuser's inlet. Thus phenomena such as separation and stall can be controlled.

104. 发明专利

JPS5486807A CENTRIFUGAL IMPELLER 失效
公开(公告)号：JPS5486807A
公开(公告)日：1979-07-10
申请号：JP15446277
申请日：1977-12-23
申请人： HITACHI LTD
发明人： YOSHINAGA YOUICHI , MIURA HARUO
IPC分类号： F04D29/30 , F04D29/08
摘要： PURPOSE:To improve the performance, by making fluid passages not extremely flat at the outlet port of a centrifugal impeller to reduce the fluid friction loss and facilitate the manufacture and reducing the leakage between the impeller and a casing. CONSTITUTION:Almost triangular vanes 8 are circularly placed on the front of a core plate 1. The fluid passages 7 are defined between the vanes 8. The height of the vanes 8 and the fluid passages 7 are made uniform or slightly decreased from an inlet port to an outlet port. Thus, the cross-sectional form of each passage 7 is not made extremely flat at the outlet but is nearly like a square or a circle. A plurality of grooves 9 almost parallel with the fluid passages 7 are placed like V or radially on the front of each vane 8, thereby making a labyrinth. Thereby, the fluid frication loss is reduced and the leakage between the impeller and the casing 4 is also reduced.

105. 发明专利

JP2014074360A Centrifugal compressor 有权
标题翻译：离心式压缩机
公开(公告)号：JP2014074360A
公开(公告)日：2014-04-24
申请号：JP2012222142
申请日：2012-10-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIURA HARUO , TAKAHASHI NAOHIKO , NARITA MITSUHIRO
IPC分类号： F04D29/10 , F04D17/12 , F04D29/16 , F16J15/447
CPC分类号： F04D29/102 , F04D17/122 , F04D29/0516 , F04D29/668 , F16J15/4472
摘要： PROBLEM TO BE SOLVED: To reduce leakage of gas flow from a seal part of a centrifugal compressor and improve damping characteristic at the seal part.SOLUTION: A centrifugal compressor of this invention comprises a casing, rotor rotatably held at this casing and having an impeller attached to it, and labyrinth seal attached to the casing and arranged oppositely to the rotor. The impeller rotates to compress gas. The labyrinth seal is arranged at least in a suction part of a final stage impeller or a balance piston for balancing a thrust force of the rotor. A diameter of the rotor facing the labyrinth seal is increased or decreased in a stepwise manner. In addition, the labyrinth seal is formed of a plurality of axial grooves and each of the grooves is formed has a plurality of pockets formed its peripheral direction.
摘要翻译：要解决的问题：减少来自离心压缩机的密封部分的气流的泄漏并改善密封部分的阻尼特性。本发明的离心式压缩机包括壳体，转子可旋转地保持在该壳体上并具有叶轮并且附接到壳体并且与转子相对布置的迷宫式密封件。叶轮旋转以压缩气体。迷宫式密封件至少布置在最终级叶轮的抽吸部分或平衡活塞中，用于平衡转子的推力。面向迷宫式密封件的转子的直径以逐步的方式增加或减小。此外，迷宫式密封件由多个轴向槽形成，并且每个槽形成为具有形成其周向的多个袋。

106. 发明专利

JP2002235525A SILENCING DEVICE AND SYSTEM 失效
公开(公告)号：JP2002235525A
公开(公告)日：2002-08-23
申请号：JP2001031890
申请日：2001-02-08
申请人： HITACHI LTD
发明人： SAITO TAKASHI , MIURA HARUO , TSURU SEIJI
IPC分类号： F01N1/10 , F01N1/02 , F01N1/04 , F04B39/00
摘要： PROBLEM TO BE SOLVED: To provide silencing device and system capable of reducing noise including a wide range of frequencies by solving a problem wherein noises generated from equipment generating noises having pulsation frequencies in a wide range from a low order to a high order, for example, a screw compressor cannot sufficiently reduced. SOLUTION: In a silencer, an inflow direction at an inflow opening end and an outflow direction of an outflow opening end of compressed air generating noise are mutually opposite, and a bent flow passage made of a sound absorbing material is disposed. The silencing system has a resonance type silencer or a multi-hole pipe type silencer on the upstream side of the silencer. The resonance type silencer is disposed on the upstream side of the silencer, and the multi-hole pipe type silencer is disposed on the further upstream side.

107. 发明专利

JP2000315883A RADIATION STRUCTURE OF CONTROL DEVICE 失效
公开(公告)号：JP2000315883A
公开(公告)日：2000-11-14
申请号：JP12556299
申请日：1999-05-06
申请人： HITACHI LTD
发明人： YOSHIHARA MINORU , FUKUSHIMA YASUO , MIURA HARUO , TAKAHASHI NAOHIKO
IPC分类号： H05K7/20 , F28D9/00 , H01L23/467
摘要： PROBLEM TO BE SOLVED: To reduce power related to cooling by dividing a radiation structure and optimizing cooling efficiency in each cooling structure, and controlling the startup and stop of radiation for each divided configuration according to the amount of cooling. SOLUTION: Temperature sensors 9 and 10 with different temperature setting values are mounted on a radiator 1 for conducting heat being generated from a heat generation part to a fin for cooling. Then, the radiator 1 itself is designed integrally, the radiation structure is divided on packaging for forming ducts 5 and 6, and a radiation capacity can be turned on/off. With the structure, the startup temperatures of cooling fans 7 and 8 are detected by the temperature sensors 5 and 6, thus accurately controlling the startup of the on/off of the radiation fans 7 and 8 and hence reducing power related to radiation and reducing fan noise.

108. 发明专利

JP2000161358A MAGNETIC BEARING DEVICE 失效
公开(公告)号：JP2000161358A
公开(公告)日：2000-06-13
申请号：JP33058598
申请日：1998-11-20
申请人： HITACHI LTD
发明人： TAKAHASHI NAOHIKO , MIURA HARUO , FUKUSHIMA YASUO , NISHIDA HIDEO , TAKAHASHI KAZUKI
IPC分类号： F16C32/04
摘要： PROBLEM TO BE SOLVED: To suppress the unbalanced vibration effectively, even when the radial direction displacement of a rotary shaft caused by an unbalanced vibration is difficult to be measured by a sensor owing to the arrangement relation between the sensor and a magnetic bearing, as to a magnetic bearing device having the sensor to measure the radial direction displacement of the rotary shaft. SOLUTION: Bearing gap detecting circuits 25a and 25b to detect the bearing gap at a radial magnetic bearing on the basis of the voltage and the current in the driving system of a radial magnetic bearing are provided. As to the control in order to levitate the rotary shaft of a rotor, the radial direction position of the rotary shaft is detected by an exclusive sensor, and the radial direction position information of the rotary shaft used to suppress an unbalanced vibration generated on the rotary shaft is made to be obtained from the above bearing gap detecting circuits.

109. 发明专利

JP2000046000A TURBO COMPRESSOR 失效
公开(公告)号：JP2000046000A
公开(公告)日：2000-02-15
申请号：JP20882398
申请日：1998-07-24
申请人： HITACHI LTD
发明人： NISHIDA HIDEO , MIURA HARUO , TAKAHASHI KAZUKI , FUKUSHIMA YASUO , TAKAHASHI NAOHIKO
IPC分类号： F04D17/12 , F04D29/58
摘要： PROBLEM TO BE SOLVED: To enable cooling of a high frequency electric motor or a magnetic bearing without deteriorating the efficiency of the compressor system, by leading at least a portion of the air for cooling the high frequency electric motor from an external device other than the compressor. SOLUTION: A cool air intake pipe 10 to which a blower 9 driven by an electric motor 8 (driving source) is attached is connected to another end of a high frequency electric motor 2. Then, cooling air pressurized by the blower 9 is sent to the high frequency electric motor 2 a radial magnetic bearing, or a thrust magnetic bearing through the cool air intake pipe 10. The high frequency electric motor 2 and the radial magnetic bearing, and the thrust bearing are cooled by the cool air which has been sent. After cooling, the cool air is released into the atmosphere. Since the blower 9 only boosts the cool air pressure up to a value necessary for sending the cool air, the energy (electric power consumption) required for boosting is small. Consequently, the turbo compressor efficiency is improved.

110. 发明专利

JPH11289697A PERMANENT MAGNET ROTOR 失效
公开(公告)号：JPH11289697A
公开(公告)日：1999-10-19
申请号：JP8565198
申请日：1998-03-31
申请人： HITACHI LTD
发明人： NARUSE TOMOHIRO , HATTORI TOSHIO , MIURA HARUO , TAKAHASHI KAZUKI , TAKAHASHI NAOHIKO
IPC分类号： H02K1/22 , H02K1/27 , H02K1/28
摘要： PROBLEM TO BE SOLVED: To suppress reduction in the clamped margin between a rotary shaft and a retention member for clamping a permanent magnet, in a permanent magnet rotor of a rotary electric machine. SOLUTION: In a permanent magnet rotor, a permanent magnet 3 and a support member 4 are provided in this order at the outer periphery of a one- piece rotary shaft consisting of a rotary shaft 1 and a rotor core 2, and the permanent magnet 3 is fixed to the one-piece rotary shaft by the support member 4 using a clamping spring. In the permanent magnet rotor, a hole 5 is provided at the shaft center of the rotary shaft 1 for easy expansion due to centrifugal force, the surface pressure between both of them required for transferring torque from the permanent magnet 3 to the one-piece rotary shaft is retained, and at the same time the diameter of the hole 5 is limited to the extent of preventing the density of magnetic flux being generated at the one-piece rotary shaft from being saturated due to the permanent magnet 3.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式